Chock block



Pateniea Nov. 29,- 1927.

v v'UNI'Jr-:121DiSflfA-TES EDWARD s; nvANs'or DETBOIT, irrIoHieAixT,I AssIGNon To THEEVANS AUTO LOADING co. INC., or DETROIT, 'moHIGAm A CORPORATION `or DELAWARE.

OHOOK' :BLOCK Application file'd April 11, l192 '7. Serial No. 182,800.V

This invention relates vto Van improvement in chock blocksfor chocking'vehicle wheels,"

especially in the shipping of automobiles. It isthe general practice to block automobile Wheels Vwhile in transit' by means of wooden, metal or Vcomposition chock blocks having a curved face to Vfit against the tire.

In the use of these chock blocks it has been o ling has been caused by the adheren'ce of dirt and the exudation of `gummy or resinous materia] therefrom. Moreover, in all three types of chock blocks'the bearing surface is characterized 'by an objectionable roughness which causes considerable'chafing, and When this chafed portion of the tire surface is stained as referred to, it becomes an eX- tremely diflicult matter to remove the stain. o The object of the vpresent inventionA is'to providelthe curved tire bearing face or surface of a chock block with a smooth clean stain-preventing covering o composed of suitably finely dividedV material suchas sawdust,

sand, straw or'the like. i o i A more specific obj ect is to provide a stainpreventing covering of the above kind which,

. in the case of composition chock blocks, may

be readily applied duringithe manufacture of the block by placing the finely divided material'inV a mold section or a section of the' mold in which the block is formed, the

finely divided material being embedded in the curved bearng surface by pressure during the molding operation so as to form a composite part of the finished chock block.

vOther objects will become apparentas the nature of the invention is better understood,

and the same consists in the novel form, comg bination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and'claimed.

In the drawing, wherein like reference characters indicate vcorresponding parts throughout the several views, o

Figure 1 is a perspective view of a composition chocki block provided with a stainpreventingcovering on itscurved tire bearmg surface, in acoordance with the present invention; i

Figure 2 is acentral longitudinal sectional view taken substantially Vupon line 24-2 of o Figure l; and i Figure 31s a vlew similar to Figure 2 ing surface covering in acoordance with the present invention. z Referrmg more in detail to the drawing,

'the formof chock blockshown in Figures 1,V and 2 is preferably formed from plastic material highly compressed as disclosed in my co-pending application upon chock block, Serial No. 182,799, filed April 11, 1927.

of i a Wooden chock block vprovided with a bear-- However, it is obvious that the block ofv VV Figures `1 and 2 may be molded of any suitable material while in a plastic state, so long as the'mat'erial has the property of hardeningto a condition of strength suitable forl the purpose, after being molded.

Inl each case, the block preferably com- `prises Vertical sides 5, a base 6 and a curved front'bearing face or surface 7 which is preferably groovedlengthwise as shown so as to conform substantially to the transverse curvature of the tire of the wheel which is to be chocked by the block. In the case of composition or wooden blocks, the latter will be of solid formation as shown, and

a heel extension is preferably provided atf Vthe lower portion of the rear Vertical face 8, as 'at 9, to facilitate attaching the block to the car floor.

In acoordance with the present invention, the curved tire .bearing surface 7 is provided with a smooth stain/preventing covering of clean finely` divided material as at 10, sawdus't, sand or straw being suitable for the purpose. Byl pr'oviding a covering 10 in this way, the objectionable chafing will be prevented to a great extent, and the more objectionable vst'aining will be entirely obvi-` ated. In the manufacture of the composition block, thelayer of finely divided covering-formingl material is preferably placed in a member of the mold, and during the molding' operation, pressure isvpreferably applied so that the covering` layer 10 ofV finely divided material is pressed or embedded in the bearing surface 7 to form a com-,

loo

vided inatei'al, when consisting of eand`` or f the like will be einbedcled to a slight extent in the bearing sui'faee eof that the eovering 10 Will noiJ become realily clesti'oyel or partly reinovecl by abi'aision when in use.

Choek hloc'ks provided 'With a isliain'pre venting eovel'ing in uccoi'dauce With `th`e above Will enable Shiplnent of the iuito'nioA IJiles to the Llealei's with `J(he tix'ee in clean and otherwise prezzzentabie condition or appeal'ance, thiis renioving eol'isidelfable ouoee for worl'y on the part of the dealer.

It is of course wellknown that strips of fabrie or felt lmve heretofoi'e been `e1n ployed in a somewhat siniilaif x'elation, solel' for the Purpose of pi'evenbing ehnliijigtie covering being applied by naiiling, rivface provided Wit-h e cox-'ering' of finely ll vuledimaterial. 1 W l`35 pliwl toeuii'lfacei` i i *81A composition ehck block molrled 40 eting 01' the like. I'Iowever, the present invention is different in that itjprvides a 25 composite element of a chook block ln'ilnarily designed and alapted fm' pi'eventlng seinf ing;I of thetire.` i

Minor changes nia'y bemadewithout cle- `pai'ting` from the spirit and scope of the 30 invention :ie cleiniecl.

lVVhab I` clannils new is:-

l. A Chock block having a` eui'ved beaijlng ln conibinat-ion,` :rehoek blockhaving a cnnved `beai'ing face, and e *smooth Covermg oi linely fllvided material p Inanently 4115? :Ei'onl plastie lnatei'ial- 'and having a* ouljveol l f beai'ing face, and coveringiof finely:diviriefd'` material pressedinto aidlfaoe. In testimonyijvhereof I lfix my signature.

EDWARD s``` EYNS. 

